Create incident list update interval preference

[elfjes]

This PR creates a preference argus_htmx.update_interval. The preference can be managed through the settings:

ARGUS_INCIDENTS_UPDATE_INTERVALS
ARGUS_INCIDENTS_UPDATE_INTERVAL_DEFAULT

The default values are ["never", 5, 30, 60] with values in seconds. The default default is 30. "never" is a special value that disables auto refresh

In the UI, a user can change their preference at the bottom of the incident list table in the refresh info block. There already was a dropdown for the page size. The behaviour of the update interval dropdown is however, different. Where page_size adds the page_size as a query param and does a partial page reload. Due to the internals of how htmx handles "every xs" triggers, it is not feasible to do a partial reload when changing the update_interval. See also bigskysoftware/htmx#3170. We therefore need to do a full page refresh when changing the update interval. This also means that we cannot send the update_interval as a query param like we do with page_size. When triggering an HX-Refresh, the client sends refreshes the current page (with current query params). The update_interval is not yet part of the query params, so now it won't pick up the change... I therefore opted to make it a non-param setting, like with date_format.

Other things:

• I have removed the load trigger from filterbox. On page load, the incidents should already be correctly filtered, so this resulted in an additional, unnecessary request.
• updated the hx-include for refreshing the incident list to .incident-list-param so that we have a single way to include certain parameters in the refresh. Just add that class to any form or input that needs to be included

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.52%. Comparing base (f6ae0b5) to head (51b524d).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1174      +/-   ##
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+ Coverage   78.48%   78.52%   +0.03%     
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  Files         141      141              
  Lines        5442     5452      +10     
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+ Hits         4271     4281      +10     
  Misses       1171     1171              

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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[hmpf]

The update_interval is not yet part of the query params, so now it won't pick up the change... I therefore opted to make it a non-param setting, like with date_format.

This makes sense, being able to bookmark an update-interval is a lot less useful then being able to bookmark a filter.